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Citation: LIU Bo-Jie, LI Xue-Yi, CHEN Wei, LIU Ren-Xiao, GE Guang-Lu. Surface Ligand Exchange and Phase Transfer of Iron Oxide Magnetic Nanoparticles[J]. Acta Physico-Chimica Sinica, ;2010, 26(03): 784-788. doi: 10.3866/PKU.WHXB20100246 shu

Surface Ligand Exchange and Phase Transfer of Iron Oxide Magnetic Nanoparticles

1.
College of Life Science, Sichuan Normal University, Chengdu 610101, P. R. China; National Center for Nanoscience and Technology, Beijing 100190, P. R. China

Received Date: 23 September 2009
Available Online: 12 January 2010

Iron oxide magnetic nanoparticles with a narrow size distribution were prepared by thermal decomposition of iron (III) acetylacetonate using benzyl alcohol as the only solvent. The structure and morphology of the as-prepared nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and dynamic light scattering (DLS). Fourier transforminfrared (FT-IR) spectroscopy and thermal gravimetric analysis (TGA) were used to study the surface chemistry of the particles, and it was found that the nanoparticles were stabilized by benzoic acid molecules with less than 20% monolayer coverage. At room temperature, the surface ligands can easily exchange for other molecules. This method will facilitate the functionalization and application of iron oxide magnetic nanoparticles.
- Iron oxide,
- Magnetic nanoparticle,
- Benzy alcohol,
- Thermal decomposition
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